Boiler-furnace



(Applicationflled Dec. 20, 1897.)

2 Sheets-Sheet l.

(no Model.)

Patented Nov. 8, I898.

M. A. CASTOE. BOILER FURNACE.

(Application filed Dec. 20, 1897.)

2 Sheets-Shaet 2.

(No Model.)

witnaaow NITED STATES PATENT OFFICE.

MARTIN A. OASTOE, OF BELLAIRE, OHIO.

BOILER-FURNACE.

SPECIFICATION forming part of Letters Patent No. 613,968, dated November8, 1898.

Application filed December 20, 1897- Serial No. 662,638. (No model.)

To all whom, it may concern:

Be it known that I, MARTIN A. CASTOE, a' citizen of the United States,residing at Bellaire, in the county of Belmont and State of Ohio, haveinvented certain new and useful Improvements in Boilers and FurnacesTherefor, of which the following is a specification, reference being hadto the accompanying drawings.

This improvement is designed to provide a means of utilizing the wastegases of annealing and similar furnaces by setting in the end of suchfurnace steam-boilers peculiarly adapted for the situation.

To this end the invention consists in the peculiar construction,arrangement, and combinations of parts hereinafter more particularlydescribed and then definitely claimed at the end hereof.

In the accompanying drawings, Figure 1 is a horizontal section showingparts of two furnaces with my boilers set therein. Fig. 2 is a verticalsection through the line as m, Fig. 1. Fig. 3 is a similar view throughthe line n y in Fig. 1. Fig. 4 is a cross-section through the boiler andits setting. Fig. 5 is an end view of the boiler.

Referring now to the details of the drawin gs by numerals, 1 1 representtwo furnaces of any desired kind, having at their ends partitions 2 2,with passages 3 3 running into the boiler-pits 4 4, in each of which isset a boiler 5, having semicircular ends 6 6, connected by water-tubes 7Rising from the top of the end 6 are two short tubes 8, which connectthe steam-drum 9 with the boiler. To the tube-plate 10 are fixed stays11, whose other ends are secured to an outer semicylindrical plate 12,provided with manholes 13 to allow of the removal or insertion of thewater-tubes or for repairing or cleaning them. There are four manholesin the front end of the boiler and two in the rear end, which last areset centrally, so that all the tubes can be readily got at for cleaningor repairing.

Over the boiler is 'set an arch of composite material, it being partlybrick and partly iron. It consists of a shell of heavy sheet iron 14:,which is stiffened by angle=-iron 15 and is lined with bricks 16.Cross-bars 17 are set at each end and rest upon the brick setting.

At 18 are shown small angle-irons by which work and form the mainsupport for the boiler.

I prefer to arrange two boilers and furnaces as indicated in Fig. 1, asroom is economized thereby; but I may use a single furnace and boilerwhere only one furnace is employed.

Between the boiler pits are formed two flues 21 and 22, the formercommunicating with left-hand pit by the passages 23 and the other fluewith the other pit by similar passages and both of them running to thestack 24. Near the stack I set dampers 25, by which I can shut off thedraft, as required, in the annealing-furnace. I deem this position ofthe dampers as an important feature, because if they were set betweenthe boilers and the furnaces the boilers would be cut off from the heatremaining in the furnaces and they would not thus make steam, whereas ifthe boilers are left in communication with the furnace they will makesteam for a considerable time even after the draft is shut off by thedampers.

From the above it will be seen that by my arrangement of the furnace andboiler the waste heat from the furnace is utilized to the utmost,because the heat that is usually wasted in these furnaces passes betweenthe tubes of the boiler and imparts its heat to the water containedtherein, and thus rapidly makes steam.

. What I claim as new is- 1. The combination with an annealing orsimilar furnace having a flue at right angles to the same, a pit for aboiler between the flue and the furnace, passages between the furnaceand the pit and between the pit and the fine, and a steam-boiler set insaid pit, substantially as described.

'2. The combination with an annealing or similar furnace having a flueat right angles to the same, a boiler-pit between the fine and thefurnace, passages between the furnace and the pit and between the pitand the flue, a horizontal water-tube boiler in said pit, a smoke-stackat the end of the flue, and a damper between the boilerand the stack,substantially as described. I

0. The combination of two annealing or In testimony whereof I affix mysignature, similar furnaces, two flues one over the other in thepresence of two Witnesses, this 18th day arranged between said furnaces,boiler-pits of December, 1897.

between the furnaces and the fines, boilers MARTIN A. CASTOE. set insaid pits, and passages from the fur- Vitnesses: naces to the pits andfrom the pits t0 the flues, F. S. MASON,

substantially as described. 1 A. M. Y. BOYD.

